Modeling the effect of laser heating on the strength and failure of 7075-T6 aluminum

Florando, J. N.; Margraf, J. D.; Reus, J. F.; Anderson, A. T.; McCallen, R. C.; LeBlanc, M. M.; Stanley, J. R.; Rubenchik, A. M.; Wu, S. S.; Lowdermilk, W. H.

doi:10.1016/j.msea.2015.05.105

Title: Modeling the effect of laser heating on the strength and failure of 7075-T6 aluminum

Journal Article · Sat Jun 06 00:00:00 EDT 2015 · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

DOI:https://doi.org/10.1016/j.msea.2015.05.105· OSTI ID:1234573

Florando, J. N. ^[1]; Margraf, J. D. ^[1]; Reus, J. F. ^[1]; Anderson, A. T. ^[1]; McCallen, R. C. ^[1]; LeBlanc, M. M. ^[1]; Stanley, J. R. ^[1]; Rubenchik, A. M. ^[1]; Wu, S. S. ^[1]; Lowdermilk, W. H. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The effect of rapid laser heating on the response of 7075-T6 aluminum has been characterized using 3-D digital image correlation and a series of thermocouples. The experimental results indicate that as the samples are held under a constant load, the heating from the laser profile causes non-uniform temperature and strain fields, and the strain-rate increases dramatically as the sample nears failure. Simulations have been conducted using the LLNL multi-physics code ALE3D, and compared to the experiments. The strength and failure of the material was modeled using the Johnson–Cook strength and damage models. Here, in order to capture the response, a dual-condition criterion was utilized which calibrated one set of parameters to low temperature quasi-static strain rate data, while the other parameter set is calibrated to high temperature high strain rate data. The thermal effects were captured using temperature dependent thermal constants and invoking thermal transport with conduction, convection, and thermal radiation.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC52-07NA27344; 12-ERD-050

OSTI ID:: 1234573

Alternate ID(s):: OSTI ID: 1250142

Report Number(s):: LLNL-JRNL-668921

Journal Information:: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Vol. 640; ISSN 0921-5093

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 13 works

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References (13)

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Electrochemical assessment of laser heat treatment of an Al–Zn–Mg–Cu alloy Wang, Kaining; Su, Ruiming; Liu, Tong Materials and Corrosion, Vol. 71, Issue 3 https://doi.org/10.1002/maco.201911154	journal	September 2019
Microstructure and mechanical properties of 7075 alloy during laser heat treatment Liu, Tong; Su, Ruiming; Qu, Yingdong Materials Research Express, Vol. 5, Issue 11 https://doi.org/10.1088/2053-1591/aade7f	journal	September 2018
Mechanical behavior and fracture characteristics of simultaneously tensile loaded and laser heated Ti6Al4V alloy Jelani, Mohsan; Li, Zewen; Shen, Zhonghua Materials Research Express, Vol. 6, Issue 3 https://doi.org/10.1088/2053-1591/aae4f7	journal	December 2018
Mechanical Response and Failure Evolution of 304L Stainless Steel under the Combined Action of Mechanical Loading and Laser Heating Jelani, Mohsan; Li, Zewen; Shen, Zhonghua Metals, Vol. 8, Issue 8 https://doi.org/10.3390/met8080620	journal	August 2018

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36 MATERIALS SCIENCE
42 ENGINEERING
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Title: Modeling the effect of laser heating on the strength and failure of 7075-T6 aluminum

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